We use the perfective will have when we are looking back from a point in time when something will have happened.

By the end of the decade scientists will have discovered a cure for influenza.
I will phone at six o’clock. He will have got home by then.

or looking "back" from the present:

Look at the time. The match will have started.
It’s half past five. Dad will have finished work.

We use would have as the past tense form of will have:

I phoned at six o’clock. I knew he would have got home by then.
It was half past five. Dad would have finished work.

We use would have in past conditionals to talk about something that did not happen:

If it had been a little warmer we would have gone for a swim.
He would have been very angry if he had seen you.
 

Exercise

Section: 

Comments

Please make any necessary correction on this sentence.
The lesson should have started a minute ago. It is alread half past nine.

Thank you.

Hello dgalido,

Your sentence is below. However, please note that we do not provide a correction service on LearnEnglish. We are here to help learners improve their English, not to offer a sentence-checking service!

The lesson should have started a minute ago. It is already half past nine.

 

Best wishes,

Peter

The LearnEnglish Team

so good sir it helps me to understand to use of will have,today i feel that my English is so weak and that why i joined here

I could not understand about
'will have" using in the sentence any one help me.

Hello kumphy,

This is a very general question and the answer is already above: this page explains the use of 'will have' so it's hard for me to add anything to what it says. If you have a specific example then we'll be happy to explain it for you - perhaps that will help you to understand.

Best wishes,

 

Peter

The LearnEnglish Team

Hello,
Is this sentence correct?
"Before the movement could have lost its nonviolent quality completely, King persuaded the masses to hold on to it."
Thanks in advance,
esztii.b

Hello esztii.b,

That sentence is not really natural English, I would say. I think the following might be what you want to say:

Before the movement lost its nonviolent quality completely, King persuaded the masses to stay true to that principle.

Best wishes,

 

Peter

The LearnEnglish Team

Thanks for your help!
I have a question though. In this sentence, I want to say that the movement ALMOST lost its nonviolent quality. (It did not lost it because King persuaded the people)
Does your sentence express this?
Thanks again!

Hello esztii.b,

Yes, the sentences tells us that the movement started to lose that quality but King intervened to stop it before it was too late.

Best wishes,

 

Peter

The LearnEnglish Team

Hello Sir,

1. Are "She will has eaten some cookies." and "She will has a new car." not correct?
2. the passive form of present future continuous is "will be being eaten" or "will being eaten"?
3. What is the obvious difference between will and shall?
4. the passive form of "Students shall hand in a lot of shool project next week." is

"A lot of school project shall be handed in by student next week."

or

"A lot of school project should be hand in by student next week."?

thank in advance
best regards

isnaini

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